Cooperate with ngDisabled
Remove unselectable instead of setting to off
Improve ngDisabled/disabled attr support
New demos for ngDisabled / disabled attribute
Refine unselectable technique, remove tests
Add support for ngReadonly / readonly attribute
Change priority to be slightly lower, improve comments
Add support for ngRequired
First pass at ngShow/ngHide support
Improve ngShow/ngHide support
Make empty css class configurable, add hiddenClassName variable
Improve demo, update readme